> For the complete documentation index, see [llms.txt](https://1000xx.gitbook.io/1000xx/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://1000xx.gitbook.io/1000xx/fee.md).

# Fee

**1. What are the fees applied to 1000XX Futures?**

Fee formula:• Trading Fees are calculated the same way: Fee = Input amount × Leverage × 0.04%• When closing, the fee will be adjusted based on the actual value of the position executed.

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**2. How is the liquidation price calculated?**Regardless of the liquidity of the underlying market, 1000XX guarantees that liquidation and stop-loss trades will always be filled at the price set when entering the position.

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The liquidation price can be calculated as follows:

* **Long position**:

P=(Filled Quantity\*Opening Price\*（1-1/Leverage）/(1-bust\_buffer)) / Filled Quantity

* **Short position**:

P=(Filled Quantity\*Opening Price\*（1+1/Leverage) / (1+bust\_buffer)) / Filled Quantity\
**Explanation:**

* **Bust Buffer** is a parameter set based on current market conditions, designed to protect users’ interests.
* All orders in the 1000XX Futures section are executed at 100% market price, unaffected by liquidity issues, ensuring fairness in trading.

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**3. How is the funding fee calculated?**

**Funding Fee Explanation:**

• After holding a position for more than 8 hours, you may incur or receive a funding fee depending on market conditions:

• **Bullish market** (positive funding rate): Long positions pay short positions.

• **Bearish market** (negative funding rate): Short positions pay long positions.

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**Funding Fee Example:**

• If you hold a $500 BTC long position with 10x leverage and a funding rate of 0.1%, the funding fee after 8 hours would be $0.21 per hour.

• If the position is closed within 8 hours, no funding fee will be charged.\
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**4. What is the 1000XX index price?**

**Index Price Calculation:**•1000XX calculates the composite index price every 500 milliseconds.

• **Data Sources**: Real-time prices from the most liquid spot and derivative exchanges worldwide.

• By aggregating prices from multiple sources, the index price can promptly correct market manipulation or abnormal trading activities, ensuring fair and reliable pricing.

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**5. Trading Pair Limitations**

To prevent systemic risk, the 1000XX Futures section has set the following limits for trading:

| **Limit Type**                       | **Limit (USDT)** | **Applicable Pairs** |
| ------------------------------------ | ---------------- | -------------------- |
| **Single Trade Opening Limit**       | 100,000          | All Pairs            |
| **Single User Daily Opening Limit**  | 2,000,000        | All Pairs            |
| **Single User Total Position Limit** | 1,000,000        | All Pairs            |